Wideband circularly polarised antenna array with isoflux pattern

Zeng, F; Zhang, ZY; Feng, Y; Zuo, S; Zhang, C; Wang, L

Wideband circularly polarised antenna array with isoflux pattern

Zeng, F

Zhang, ZY Feng, Y Zuo, S Zhang, C Wang, L

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Publisher:: WILEY
Publication Type:: Journal Article
Citation:: IET Microwaves, Antennas and Propagation, 2021, 15, (9), pp. 1025-1034
Issue Date:: 2021-07-01

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Field	Value	Language
dc.contributor.author	Zeng, F https://orcid.org/0000-0002-1513-1818
dc.contributor.author	Zhang, ZY
dc.contributor.author	Feng, Y
dc.contributor.author	Zuo, S
dc.contributor.author	Zhang, C
dc.contributor.author	Wang, L
dc.date.accessioned	2022-05-16T03:36:25Z
dc.date.available	2022-05-16T03:36:25Z
dc.date.issued	2021-07-01
dc.identifier.citation	IET Microwaves, Antennas and Propagation, 2021, 15, (9), pp. 1025-1034
dc.identifier.issn	1751-8725
dc.identifier.issn	1751-8733
dc.identifier.uri	http://hdl.handle.net/10453/157409
dc.description.abstract	The authors present a wideband circularly polarised antenna array consisting of a 10-element ellipse dipole antenna and a feed network. A metal pillar is vertically loaded at the end of each ellipse dipole arm to extend the current path, thereby reducing the lateral dimension of the antenna element. For uniform coverage over the Earth's surface, antenna with an isoflux pattern is required due to its uniform power density over a wide coverage area. To obtain wideband and isoflux characteristics, the amplitude and phase distributions along the network are optimised by applying the hybrid of the genetic algorithm and particle swarm optimisation. Particularly, the feed network with broadband phase shifting performance is designed to attain a broad bandwidth requirement. The proposed antenna can achieve excellent impedance matching and axial ratio characteristics from 1.1 to 1.6 GHz. In addition, the isoflux radiation pattern is obtained with the beamwidth of ±21° where the gain is higher than 0 dBi in the elevation plane (xoz-Plane). The realised gain is better than 10.2 dBi and the side lobes are below −14.2dB across the operating frequency. Finally, the antenna array is manufactured and measured, and good agreement is achieved between the simulation and measurement results.
dc.language	English
dc.publisher	WILEY
dc.relation.ispartof	IET Microwaves, Antennas and Propagation
dc.relation.isbasedon	10.1049/mia2.12111
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.title	Wideband circularly polarised antenna array with isoflux pattern
dc.type	Journal Article
utslib.citation.volume	15
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	1005 Communications Technologies
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	open_access	*
dc.date.updated	2022-05-16T03:36:23Z
pubs.issue	9
pubs.publication-status	Published
pubs.volume	15
utslib.citation.issue	9

Abstract:

The authors present a wideband circularly polarised antenna array consisting of a 10-element ellipse dipole antenna and a feed network. A metal pillar is vertically loaded at the end of each ellipse dipole arm to extend the current path, thereby reducing the lateral dimension of the antenna element. For uniform coverage over the Earth's surface, antenna with an isoflux pattern is required due to its uniform power density over a wide coverage area. To obtain wideband and isoflux characteristics, the amplitude and phase distributions along the network are optimised by applying the hybrid of the genetic algorithm and particle swarm optimisation. Particularly, the feed network with broadband phase shifting performance is designed to attain a broad bandwidth requirement. The proposed antenna can achieve excellent impedance matching and axial ratio characteristics from 1.1 to 1.6 GHz. In addition, the isoflux radiation pattern is obtained with the beamwidth of ±21° where the gain is higher than 0 dBi in the elevation plane (xoz-Plane). The realised gain is better than 10.2 dBi and the side lobes are below −14.2dB across the operating frequency. Finally, the antenna array is manufactured and measured, and good agreement is achieved between the simulation and measurement results.

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http://hdl.handle.net/10453/157409